Book-stitching machine



Aug. 7, 1923.

M. CHRISTENSEN BooK STITCH'ING MACHINE 1i-j? j Filed peo. '13. 1919 .Btw/megs,

Patented Aug'. T, 1923.

y arten' sare Aram oFFicE.

JIARIIN CHRISTENSEN, F RACINE, `ISGONIN, ASSIGNDR TO CHRISTENSEN MA- CHINE C0., OF RACINE, VIISCONSIN, A CRIPORATON OF WISCONSIN.

BOOK-STITCHING MACHINE.

Application filed December 13, 1919. Serial No. 344,697.

To allwwm t (may concern.'

Be `it lnown that I, MARTIN Ci-inisrnN- smi, a citizen of the United States, and resident of Racine, in the county of Racine and State of llfisconsin, have invented new and useful Improvements in Book-Stitching Machines, of which the following is a description, reference being had to the accompanying drawings, which area part .of this specification.

'I'he present invention relates to certain new and'useful improvements in book stitching machines and refers more particularly to a front delivery bearing member `used in connection therewith.

eral use do not dischargea boolr untilr after the second stroke after the book has been stitched, which means that when a twenty inch stroke is being employed it is necessary that the book be moved forty inches after being stitched. This necessitates an unusually long machine whereas if the book could be `discharged at the end of the very next stroke after being'stitched, the machine would be shortened by twenty inches and thus considerably reduce the cost of the machine. y, j

I-Ience, with the above and other features in mind my invention has for one object to provide means whereby the book is discharged at the end of the very next stroke after being stitched, or afterthe boolrhas passed the center of the last stitclier. l

Another more specific object of this invention is to provide, an out-set support for the delivery roll shafts whereby the stitcher mechanism may be positioned there adjacent and aboolr delivered from the machine at the end of the very next stroke after being stitched. .y

A still further object of the present invention is to provide an 'out-set bearing for the r purpose described in which a book will'be 'I' discharged over the large delivery` roll shaft bearing.` v y lVit-li the above and other objects in view, which will appear as the description proceeds my invention resides in the novel construction, combination and arrangements of 'parts substantially as hereinafter described andmore particularly defined by the appended claims "it being understood that such changes in the precise embodiment of Lie of a book stitching machine equipped with my novel form of front delivery bearing member,

Figure 2 is a perspective view of my novel form of front delivery bearing member del i tached from the stitching machine, The `book stitching machines now in geny Figure 3 is a view similar to Figure l of a slightly modified form of construction, and Figure l is a fragmentary sectional view taken through the machine onthe plane of line 4*4 of Figure l, said View illustrating means for removing the signature from the saddle.

Referring now more particularly to the drawing the numeral 5 designates a feed table of a book stitching machine' along which series or groups of signatures 6 are fed to .be stitched by suitable stitchers 7 cooperating with clinchers 8 and then be delivered from the machine by means of a plu-, rality of delivery rolls and belts to be later described. For a further description and illustration of the type of machine referred to, attention is called to United StatesI-hattent #1,028,708 which shows a book stitching machine. @ne objection to the machines now in general use is that by reason of the stitcher member disposed adjacent the delivery rolls being spaced therefrom owing to the construction of the bearing support for the delivery roll shafts, a group of signatures or bool; after being stitched can not be delivered until the end of :the second stroke of the machine. I have overcome this objection by a novel form of bearing mem-y feed mechanism. The feed mechanism may l be of any desired construction, but is illustrated in the accompanying drawing as comprising a feed bar 27, slidably mounted in one face of the saddle 5,V see Figure 4, and

signature engaging fingers "28 carried by the bar 26 for binding the signatures between them and bar 27 when said bars are conjointly moved toward the delivery end of the ina-chine by suitable means, not shown.

My novel form of bearing Vmember consists of a securing arm 10 adapted to be secured to the stitching machine frame 11 by suitable securing means (not shown) passed through apertures '12 and having extended therefrom the bearings for the delivery roll shafts. Formed at the outer end of the bracket member 10 is a bearing 18 for receiving the lower small delivery roll shaft and extending upwardly and outwardly therefrom near its outer end 14 is a web or offset support 15 having an upper small delivery roll shaft bearing 16 formed on its outer end. As best shown in Figure 2, the web 15 is secured to the bearing 16 near its outer end 17, whereby a recess or space 18 is formed between the bearings 13 and 16 so thatthe st-itcher 7 may be moved therein, as depictedin Figure 1.

A downwardly and inwardly extending oH-set web or support 19 extends from the inner end 2O of the bearing 16 and has a large delivery roll shaft bearing 21 formed at its lower end, said bearing 21 projecting outwardly from the web 19 to provide a space 2Q between the bearings 16 and 21,

y for the reasons to be later described.

As best shown in Figure 1 a lower small delivery roll shaft 13 has its inner end mounted within the bearing 13; an upper siiiall 'delivery rollshaft 16 has its inner end mounted' in bearing 16; and a large delivery roll shaft 21 has its inner end mounted within bearing 21. Mounted upon the shafts 13, 16 and 21 are a plurality of sets of rolls, each having a delivery belt 23,

trained thereabout and said belts and rolls pick up the signatures after being stitched vand deliver or discharge the same from the stitching machine.

The completed signatures are deliveredto thev belts 23 in any desired manner, as for instance, by a vertically movable plate 29 'positioned within saddle. 5 at its apex and adapted to engage the signatures at their l flds and project them between the belts `and the rolls on shaft Q1. The plate 29 is operated, inthe present instance, by rods 30 having ltheir upper ends secured to said plate vand their lower ends e-ngageable with cams 31 mounted on a shaft 32 in connection with the machine drive, not shown. As this deliveryi mechanism forms no important feature-of this invention except that the con struction of the bearing member 9 permits the same to engage the book at the end of the very next stroke after being stitched further detailed description is thought unnecessary.

A bearing 24 is formed on the top inner end of the bracket member 10 for receiving the idle delivery roll shaft, and a bearing 25 is formed on the web 19 for receiving the guide shank bar 26, as will be understood the bearing member 9 is cast 'in a single piece and iscapable of production at a very low cost, all things considered.

In operation, thel signature 6 in position to be stitched is positioned beneath the delivery roll shafts at` the end of the stroke immediately after the stitching mechanism has operated and by reason of the peculiar construction of the bearing member 9 the inner end of the book would then be disposed in line with the bearings 16 and 21 but will be just outwardly of the web 19 so that the delivery belts 23 may `pick the same up from off the feed table and discharge it from the machine. When the signature is discharged from the stitching 'machine its inner end passes the lower most bearing 21 between the ,upper bearing 16 as designated indotted line in Figure. 1.

In Figure 3 I have shown a slightly modified form of construction of 'my improved bearing member in which the web member 19 is positioned a great distance'from'web 15 depicted in Figures 1 and 2 whereby'th'e bearing member is so positioned that the signatures 6 ma be discharged from rthe machine after t e inner Vend thereof has passed the center of tbelast stitcher 7. This structure permits the discharge of the signatures before the end ofthe next stroke after the same has beeny stitched as will be obvious.

Vhat I claim as my invention is:

1; In a book stitching machine, the coinbination of a stitcher, -a signature support, means for feedingsignatures along `'said support to said ,stitcher to be 'stitched and then away from said stitche'r after the stitching operation, delivery rolls` delivery r'oll shafts carrying said rolls, a bearing member for said roll shafts vso arranged that the stitcher may operate upon a signature adjacent the ends of said shafts, and means for removing the completed signatures from the signature support immediately after they have 'been fed past vthe center of the stitcher by said feeding means and presenting them to the delivery rolls.

2. In a book stitching machine, the cornbination of a stitcher, a saddle traversing the stitcher, means for feeding the signatures along the saddle and means for removing completed signatures 'from' the saddle immediately after they have been fed pastthe center of the stitcher by said feeding means.

In testimony whereof, I affix -my signature.

ilo 

